Apparatus for perforating the type-bands for automatic telegraph transmitting apparatus or the like.



1%. mm. PATEN'PFD M. Q, 1005. A. FRANKIE & E. EHRHARDT. APPARATUS FORPERFORATING- THE TYPE BANDS FOR AUTOMATIG TELEGRAPH TRANSMITTINGAPPARATUS OR THE LIKE.

ZSEEBTS-QEEBT 1.

ad-0% J APPLIOATION FILED FEB. 29, 1904.

No. 779,153. PATENTED JAN. 9, 1905.

v A. PRANKE & E. EHRHARDT. APPARATUS FOR PERFORATING THE TYPE BANDS FORAUTOMATIC TELEGRAPH TRANSMITTING APPARATUS ORTHE LIKE.

APPLICATION FILED T11R29. 1904. 1

2 SHEETS-SHEET 2.

am/0A ZUZIZLa/doU dear/4% UNITED STATES Patented January 3, 1905.

PATENT Orricn.

ADOLF FRANKE, OF GROSS-LICHTERFELDE, NEAR BERLIN, AND ERWIN EHRHARDT, OFBERLIN, GERMANY, ASSIGNORS TO SIEMENS & HALSKE, AKTIEN-GESELLSGHAFT, OFBERLIN, GERMANY.

APPARATUS FOR PERFORATING THF TYPE-BANDS FOR AUTOMATIC TELEGRAPHTRANSMITTING APPARATUS OR THE LIKE.

SPECIFICATIONfor-ming part of Letters Patent No. 779,153, dated January3, 1905.

Application filed February 29, 1904. Serial No. 195,955.

To all whom it may concern:

Be it known that we, ADOLF FRANKIE, engineer, a subject of 'the King ofPrussia, German Emperor, residing at 23 Sternstrasse,Gross-Lichterfelde, near Berlin, and ERWIN EHRHARDT, engineer, a subjectof the Prince of Reuss, residing at S. W. 4. Askanisther Platz, Berlin,Germany, have invented a certain new and useful Improvement in Apparatusfor Perforating the Type-Bands for Automatic Telegraph TransmittingApparatus or the Like, of which the following is a full, clear, concise,and exact description.

Our invention relates to a perforating apparatus serving for theproduction of perforated type-bands, such as are used in particular forrapid telegraphy with automatic telegraphic transmitters. Theseperforating apparatus operate in such manner that a set ofperforating-punches over which the paper band is drawn with astep-by-step motion are operated upon by a keyboard and suitableintermediate mechanism in such manner that the separate punches thereofare forced through the paper in certain combinations corresponding tothe letter or symbol to be'produced. Generally the said combinations arepreviously prepared in groups in the apparatus in the form of suitablemechanically or electrically acting elements, so that merely by apressure on a corresponding key the desired combination is brought intoaction as a whole, so as to produce a complete group of perforationsrepresenting the desired letter or symbol.

' Accordingto the present invention the combinations of mechanicalelements corresponding tothe groups of perforations are arranged in theform of groups of pinssituated in parallel rows upon the periphery of acontinuously-revolving drum or equivalent device and are made at acertain point of the path through which they travel to cooperate withthe set of perforating-punches, so that according to the position of thepin-drum at the moment of cooperation a certain group of pins comes intoaction, so as to produce a corresponding combination of holes in thetypeband.

an auxiliary power can be applied effectively for the actual punchingoperation and for actuating the punching mechanism, that the speed ofworking determined by the most rapid manipulation by hand can be easilyattained, and that it enables an effective and strong construction basedon mechanical principles to be employed that satisfies all practicalrequirements.

In the accompanying drawings is shown the construction of apparatuspreferably employed for carrying out the invention.

Figure 1 shows a part front view and part vertical section of thecomplete apparatus.

Fig. 2 shows a side view of its upper part;

Fig. 3, a sectional plan on line I I, Fig. 2. Fig. 4 shows a partsection with the stopping and releasing devices in a difierent positionfrom that at Fig. 1, and Fig. 5 a transverse sectional side view of theparts shown in Fig. 4.

w is the pin-drum, and p the punch-frame, which is here shownimmediately opposite the pin-drum. The latter revolves with the verticalspindle b and receives motion through the bevel-wheels r r from theshaft 0, driven by an external source of poweras, for instance, a smallelectric motor. The punchframe 29 is mounted on lever 12. a by means oftwo lateral projections 9, so as to be capable of rocking thereon, andis generally held by the stop (1 and spring 9 in a certain normalposition. The levers a a are pivotally mounted on a spindle u and aregenerally drawn by springs .9 against the stops 8.

In the front part of the punch-frame p is arranged the row of punches,Figs. 2 and 3, the one end surface of which is presented to thepin-drum, While the other end surface is presented to the paper band ledthrough the slot cl of the frame 1). The punches are separately movableand are acted upon by springs f, engaging with grooves, so as to holdthese normally in the position shown. In conse- The advantages of thisinvention are that,

quence of this arrangement when the punchframe 19 is pressed against thepin-drum the separate punches in coming in contact with the pin whichmay happen to be opposite them will be pressed through the paper band,so that a group of holes is formed corresponding to the particularcombination of pins that act upon the punches. As all the requisitecombinations of pins are provided on the drum, it is only necessary toeffect the said pressing of the punches against the pin-drum at themoment when a certain pin group is presented to the punches forproducing the required type-perforations. The last-named operation is inthe present case performed by means of an arrangement of differentialgear consisting of bevel-wheels 9", r and r and two revolving arms 0 and0 which operate in conjunction with a number of stops it, arranged in acircle and corresponding in number to the number of pin groups on thedrum, the action being as follows: The levers a, carrying thepunch-frame p and which, as above stated, can rock on u, are connectedby short links m with a loop-shaped bar 7r, Fig. 1, mounted loose on thespindle 6, the lower limb of which bar forms a bearing for the axisc'ofthe middle wheel 1". It will be evident from this arrangement that theturning of the looped bar is in a certain direction will cause thepunchframe to approach the pin-drum w. As the punch-frame is normallyheld in position relatively to the pin-drum (shown at Figs. 2 and 8) andwhich is determined by the stop 9, it

follows that the looped bar is and axis 2' also have acorrespondingly-limited normal position.

Of the three wheels the upper one, 9 is fixed on the spindle b of thepin-drum and,

transmits the motion it receives from the bevelwheel by means ofbevel-Wheel 1' to the lower wheel 7*, which is mounted loose on the hubof a bevel-wheel P, that is mounted loose on spindle b and is in gearwith the bevelwheel 0*. The two wheels o and 0' which in consequence ofthe chosen ratio of transmission revolve in the same direction and atthe same speed as the pin-drum, carry, respectively, an arm 0 and 0fixed thereon, such arms being arranged at a slight angle to each other,as shown at Fig. 3, 0 being in advance of 0 If now a certain obstacle isopposed to the arm 0"on its rotation round spindle 6, it will be seenthat in consequence of wheel 7 being stopped wheel r and its spindlewill be shifted round somewhat, and in carrying the looped bar k roundwith them the punchframe will be moved by k and n toward the pin-drumagainst the action of spring 8'. On

the arm 0 being released the punch-frame will of course at once be madeto spring back, together with the looped bar it and wheel r into theiroriginal position by the action of springs s.

The arresting of arm 0 for the purpose of rectly read from it.

key t, in which position the stop will lie in the path of arm 0.According to the position of the stop h, which is thus actuated, theresulting motion of the punch-frame will occur at a definite period ofthe revolution of the pin-drum, and consequently a correspondinglydefinite group of pins will be made to act upon the punches forperforating the paper. The forward motion of the punch-frame against thepin-drum must of course belirnited, and consequently the time duringwhich the arm 0 is arrested must also be accurately determined. The arm0 serves for this purpose, and, as above stated, it is situated at adefinite angle to the arm 0' in the backward direction, as shown in Fig.3, and it is so formed with an incline on its front operative side, asshown in Fig. 5, that when a stop it has arrested the arm 0 arm 0 incontinuing to move forward bears with its incline upon acorrespondingincline on the stop, and in thereby pushing the stop upward causes it torelease the arm 0 and also to move out of its own path. The arm 0, asabove described, is at once made to spring backinto its originalposition relatively to arm 0 together with the punchplate and otherintermediate devices, by means of the springs s.

Briefly stated, therefore, the complete operation is as follows: On thedepression of acertain key t the corresponding stop it ar rests therevolving arm 0, thereby causing the corresponding group of pins on thepin-drum to operate certain of the punches, so as to perforate the paperduring the forward motion of the punch-frame, and immediately afterwardthe advancing arm 0 liberates arm 0 from the stop, causing it and theparts connected therewith to reassume their original positions. Theforward feed of the paper is effected automatically by means of aratchetwheel g, Figs. 2 and 3, and a spring-pawl carried by the frame,the wheel g being mounted on the same spindle with two pin-wheels j thatare engaged with two lateral rows of perforations on the paper band, sothat at each forward motion of the punch-frame the ratchet-Wheel g andwheels 1" are turned forward one tooth, so as to feed forward the paperjust before the punching is effected. In the construction shown on thedrawings there is also provided an arrangement for producing on thepaper a corresponding type impression at the same time that it isperforated, so that the perforated message can be di- The upper part wof the pin-drum w is for this purpose provided with projecting typesround its periphery corresponding to the respective pin groups IIO

